Blind Benchmark Exercise for Spent Nuclear Fuel Decay Heat

Peter Jansson*, Martin Bengtsson, Ulrika Bäckström, Francisco Álvarez-Velarde, Dušan Čalič, Stefano Caruso, Ron Dagan, Luca Fiorito, Lydie Giot, Kevin Govers, Augusto Hernandez Solis, Volker Hannstein, Germina Ilas, Marjan Kromar, Jaakko Leppänen, Marita Mosconi, Pedro Ortego, Rita Plukienė, Arturas Plukis, Anssu Ranta-AhoDimitri Rochman, Linus Ros, Shunsuke Sato, Peter Schillebeeckx, Ahmed Shama, Teodosi Simeonov, Alexey Stankovskiy, Holly Trellue, Stefano Vaccaro, Vanessa Vallet, Marc Verwerft, Gašper Žerovnik, Anders Sjöland

*Corresponding author for this work

    Research output: Contribution to journalArticleScientificpeer-review

    12 Citations (Scopus)

    Abstract

    The decay heat rate of five spent nuclear fuel assemblies of the pressurized water reactor type were measured by calorimetry at the interim storage for spent nuclear fuel in Sweden. Calculations of the decay heat rate of the five assemblies were performed by 20 organizations using different codes and nuclear data libraries resulting in 31 results for each assembly, spanning most of the current state-of-the-art practice. The calculations were based on a selected subset of information, such as reactor operating history and fuel assembly properties. The relative difference between the measured and average calculated decay heat rate ranged from 0.6% to 3.3% for the five assemblies. The standard deviation of these relative differences ranged from 1.9% to 2.4%.

    Original languageEnglish
    Pages (from-to)1125-1145
    JournalNuclear Science and Engineering
    Volume196
    Issue number9
    DOIs
    Publication statusPublished - 2022
    MoE publication typeA1 Journal article-refereed

    Funding

    The staff at the Ringhals nuclear power plant in Sweden are acknowledged for providing input data for this exercise. The OECD/NEA and JRC-Geel are acknowledged for hosting the meetings.

    Keywords

    • calorimeter
    • decay heat
    • experimental measure
    • Spent nuclear fuel
    • validation

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